Oil-cup.



No. 827,470. I PATENTED JULY 31, 1906.

P. W. SHAWVER.

OIL CUP.

APPLICATION FILED SEPT. s. 1904.

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THE mmms PETERS 607, WASHINGTON, n. c,

' Davenport, in the county of Scott and State UNITED STATES PATENTOFFICE.

Specification of Letters Patent.

Patented July 31, 1906.

Application filed September 8, 1904. Serial No. 223,246.,

.To aZZ whom it may concern.-

Be it known that I, PAUL W. S1-IAwvER,-a citizen of the United States,and a resident of of Iowa, have invented a new and Improved Oil-Cup, ofwhich the following is a full, clear, and exact description.

This invention relates especially to a device for feeding heavy oils tothe air-cylinders of air-compressorssuch, for example, as the air-pumpsof fiuid-pressure brake apparatus.

The prime object of the invention is to insure a regular andcompletely-controllable feed of the lubricant; and to this end I providecertain novel means for keeping the heavy oil sufiiciently warm toinsure its easy flow and for applying to the lubricant in the cup asufficient air-pressure to force the former out of the cup at thedesired rate of feed.

The invention involves various other features of major or minorimportance and all will be fully set forth hereinafter.

This specification is an exact description of one example of myinvention, while the claims define the actual scope thereof.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in both views.

Figure 1 is a vertical sectional view of the invention on line 2 2 ofFig. 2, showing it in use; and Fig. 2 is a top view of the cup after theremoval of the cap f.

The drawings represent the invention applied to an air-pump of the usualfluid-pressure brake system.

In the drawings, t indicates the center piece of the air-pump. mindicates the aircylinder, in which latter works the piston s. Saidcylinder m has a part forming a transverse passage 1" at its upper end,which com municates with passage a of the cup I). The top of the saidcup I) is provided with a cap f, which is secured to the upper end ofthe cup by being screwed thereon in the usual manner or by any othersuitable method and has provided in its under side a space or cut-outportion adapted to receive the cap g of the tube g, with suflicientspace, however, between the inside of said cap f and the outside of thetube-head g to allow air or other compressible medium to pass from thetube 9 through such space and into the oil-chamber, as hereinafterfurther explained.

Within the cup I) is located a tube 9, which screws centrally into thelower part of the cup I; and communicates with the passage n of the cupI). The passage 'n and the tube 9 are arranged to form in the cup apassage adapted to receive the compressed air from the cylinder m, so asto communicate to the interior of the oil-cup the heat of said air.

g indicates the upper portion of the tube 9. This part g is of solidmetal, with the exception of the passage k, and is made of anyconvenient shape to fit a wrench adapted to screw it into the cup 1).

7c indicates a passage located centrally in the tube 9 and communicatingwith the interior of cup I). The passages n and k and the tube 9 form apassage leading from the cylinder m to the interior of cup I). The part0 is a hexagon nut, by which the cup is screwed into the pump, and p isthe threaded part of the cup, which connects the cup with the pump, boththese parts being cast integral with the casing b. The lower extremityof the tube g is threaded to screw into the main body of cup I). Withinthe tube 9 are located a number of baffles h, which serve to retard thepassage of the compressed air through the tube g. Said bafiies h arefitted very snugly into the tube 9, which by so doing causes a frictionbetween the molecules of air, thus causing the air to become moreintensely heated as it is forced through the openings formed by theinner walls of the tube 9 and edges of the baflies h. Said bafiles hbeing formed of one piece of metal are turned to make the connectingstemh and pin a. Said pin a is intended to keep the upper bafile fromforming an airtight seat between the upper bafiie and the upper end ofthe tube 9. The lower baffle h2 is made to form a seat with the part bof cup I). This is done to prevent the air from com ing back throu htube 9 on the down or suction stroke of t e piston 8, thus causing theair to be forced out of the cup through passa e cl, drawing the oil withit.

rom the passage 72 a branch passage cl extends, this passage formingvirtually a continuation of the passage n and extending into theinterior of the cup. The said branch 11 is commanded by a suitable valve6, which is threaded to engage with the boss 'i, which latter is aprojection of the inner wall of cup I), being cast'thereunto. Said valve6 is provided at its upper end with a suitable slot 6, which is made toengage with a wrench or screw-driver by which valve e is adjusted.

In the operation of the oil-cup the parts are fitted, as shown in Fig.1, and the valve is adjusted to the desired amount. As the piston 8moves toward the passage 1" a part of the air compressed by the piston sis forced through passage n, into tube 9, through the opening 7c, intothe interior part of the cup.

That part of the air which passes through tube g serves to heat theinterior of the oilcup, as heretofore described, thus keeping the oil atthe proper temperature. Said air also exerts a pressure on the body ofoil, as will be understood. Upon the return stroke of the pistons thesuperior pressure in the upper part of the oil-cup will force 'a certainquantity of oil through passages (Z and it into the cylinder m. Thisoperation continues with the operation of the piston s, and in thismanner the cylinder is effectively lubricated.

Various changes in the form, proportions, and minor details of theinvention may be resorted to at will without departing from the spiritand scope thereof. Hence I consider myself entitled to all suchvariations as may lie within the intent of my claims.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- 1. A lubricating-cup for motors, comprising an outercasing with means at its lower extremity whereby it may be connectedwith the port of a motor, its upper extremity constructed to havesecured thereto a cover, a tube secured longitudinally within the cup,and having its upper end formed with a head having a central passagetherethrough to provide an outlet from said tube, the space between thecasing and tube forming an oilchamber, said cup having a passa e throughits lower portion extending from t e tube to the motor-port and a branchpassage connecting the oil-chamberwith the motor-port, a stem havingupon it a series of baffles and movable longitudinally within said tube,and having valvular means for opening and closing the passage betweenthe tube and motorport, means for keeping the passage in the tube headunobstructed, valvular means within the oil-chamber for regulating theadmission of oil into the branch passage in the lower portion of thecup, and a removable cover secured to the upper portion of the casing,so formed as to provide a limited space between the outside of thetube-cap and said cover, forv the purposes herein stated.

2. In a lubricatorcup for air-compressor cylinders, an oil-cup providedwith means for securing it to a port in such cylinder, a tube securedwithin said oil-cup, its lower end forming a valve-seat, its upper endbeing formed with a head having a central passage to provide an outletfrom said tube, a stem provided with a series of friction-bafflesmounted thereon, placed within said tube and capable of longitudinalmovement therein, the lower bafi le acting as a valve on the valve-seataforesaid, the upper bafl le provided with a lug to prevent said bafliefrom closing the entry to the passage in the tubehead, the space betweenthe outer casing and said tube, and surrounding the latter, constitutingan oil-chamber, the lower portion of said oil-cup being provided with apassage to connect the port in the air-compressor cylinder with the tubein the oil-cup, so that air or other compressible medium may passtherethrough from said cylinder to said tube, and a branch passageconnecting said oil-chamber with said first-named passage so that oilmay flow from the oil-chamber into the port of the cylinder, a valvesuitably secured within the oil-chamber to regulate the flow of oil fromthe oil-chamber into said branch passage, and a cover for said oil-cupremovably secured to the top of the cup and of such form as to provide alimited space between the outside of the tube-head and said cover, allfor the purposes stated.

3. In a lubricator-cup for motors, an oilcup having its lower portionconical in form, provided with means at its lower extremity forconnecting it with the port of such motor, and comprising an outercasing, the tube g secured longitudinally within the cup by screwing thesame into the lower portion thereof, the valve-seat b, stem h, with aseries of baffles h secured thereto, the lower baffle k I forming avalve in conjunction with the valve-seat b, the stop-pin a secured tothe upper baffie, the tube-head g provided with the passage 7c, theconnecting-passage n between the tube and motor-port, the branch passaged, the valve a secured within the oilchamber, and the oil-cup coverf soformed as to provide a limited space between the outside of saidtube-cap g and said cup-cover, for the purposes stated and substantiallyas described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

PAUL W. SHAWVER.

Witnesses:

OHRISTEN J. PETERSON, S. G. SUsEMIHL.

